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Q: Sand dunes are predominantly formed by:
  • A. alluvial soils
  • B. marine soils
  • C. aeolian soil deposits
  • D. glacial soils
Correct Answer: Option C - Aeolian soil– It is windblown yellowish light brown dust consisting of silt or fine sand particles. Dune sand– It is a low hill of sand on the sandy shores, of sea, rivers and lakes which develops due to loose sand being exposed to wind.
C. Aeolian soil– It is windblown yellowish light brown dust consisting of silt or fine sand particles. Dune sand– It is a low hill of sand on the sandy shores, of sea, rivers and lakes which develops due to loose sand being exposed to wind.

Explanations:

Aeolian soil– It is windblown yellowish light brown dust consisting of silt or fine sand particles. Dune sand– It is a low hill of sand on the sandy shores, of sea, rivers and lakes which develops due to loose sand being exposed to wind.